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| Section | Objectives |
|---|---|
| Manage users and groups | - Local group management - Local user account management - Password and password aging management - Privileged access configuration |
| Manage basic networking | - Hostname resolution - Firewall configuration with firewalld and firewall-cmd - IPv4 and IPv6 configuration - Network services at boot |
| Deploy, configure, and maintain systems | - Default boot target configuration - Software installation and updates - Bootloader configuration - Task scheduling with at, cron, and systemd timers - Time service clients - Service management |
| Manage security | - SELinux enforcing and permissive modes - SELinux Boolean settings - SSH key-based authentication - SELinux file and process contexts - Default file permissions - Firewall configuration - SELinux port labels - SELinux file context restoration |
| Configure local storage | - GPT disk partitions - Adding partitions, logical volumes, and swap - Volume groups - Physical volumes - File system mounting using UUID or labels - Logical volumes |
| Create simple shell scripts | - Looping constructs - Processing command output - Processing script inputs - Conditional execution |
| Create and configure file systems | - NFS file systems - VFAT, ext4, and XFS file systems - Autofs - Extending logical volumes - File permission troubleshooting |
| Manage software | - Configure RPM repositories - Configure Flatpak repositories - Install and remove RPM packages - Install and remove Flatpak packages |
| Understand and use essential tools | - Text analysis with grep and regular expressions - Input and output redirection - File permissions - Users and multi-user targets - System documentation - Creating and editing text files - Remote system access using SSH - Shell access and command syntax - File and directory management - File archiving and compression - Hard and soft links |
| Operate running systems | - Tuning profiles - Network services - Process scheduling - Process monitoring and termination - Boot systems into different targets - System logs and journals - Secure file transfer - Interrupt the boot process - Boot, reboot, and shut down systems |
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NEW QUESTION # 25
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 400MB. Make successfully that the size of Logical Volume 200MB without losing any data. The size of logical volume 200MB to 210MB will be acceptable.
Answer:
Explanation:
see explanation below.
Explanation
* First check the size of Logical Volume: lvdisplay /dev/vo/myvol
* Make sure that the filesystem is in a consistent state before reducing:
# fsck -f /dev/vo/myvol
* Now reduce the filesystem by 200MB.
# resize2fs /dev/vo/myvol 200M
* It is now possible to reduce the logical volume. #lvreduce /dev/vo/myvol -L 200M
* Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol
* Verify that the size comes in online or not: df -h
NEW QUESTION # 26
Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.
Answer:
Explanation:
see explanation below.
Explanation
# cp /etc/fstab /var/tmp/
# chgrp admin /var/tmp/fstab
# setfacl -m u:user1:rwx /var/tmp/fstab
# setfacl -m u:user2:--- /var/tmp/fstab
# ls -l
-rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab
NEW QUESTION # 27
SIMULATION
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common
NEW QUESTION # 28
Configure a user account.
Create a user iaruid is 3400. Password is redhat
Answer:
Explanation:
see explanation below.
Explanation
useradd -u 3400 iar
passwd iar
NEW QUESTION # 29
21. Configure an application
* Configure an application named rhcsa.
* When this application is run as the user natasha, it should display the string: This is a rhcsa
Answer:
Explanation:
Explanation/Reference:
Solution:
su - natasha
vim .bashrc
alias rhcsa='ehco This is a rhcsa'
source .bashrc
rhcsa
NEW QUESTION # 30
......
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